<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div class="app">
        <p>{{msg}}</p>
    </div>
    <script src="../js/vue.js"></script>
    <script>
        let vm = new Vue({
            // el:'.app',
            data:{
                msg:"闰土 灵魂回来了吗！！"
            }
        })
        // 挂载，可以替代el:'选择器'
        vm.$mount('.app');
        // mixin 混入
    </script>
</body>
</html>